{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6ES7338-4BC00-0AB0","brand":"Siemens","brandSlug":"siemens","productSlug":"6ES7338-4BC00-0AB0","canonicalUrl":"https://aoctrl.com/siemens/6ES7338-4BC00-0AB0","factsUrl":"https://aoctrl.com/api/mcp/products/6ES7338-4BC00-0AB0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIMATIC S7-300 signal module, 6ES7338-4BC00-0AB0, for 3 SSI sensors, 2 freeze inputs, 24 V DC, 20-pin front connector, 40 x 125 x 120 mm.","salesMarkdown":"## SSI sensor interface for S7-300 racks The Siemens 6ES7338-4BC00-0AB0 is a SIMATIC S7-300 signal module purpose-built to read position values from up to three SSI absolute encoders, with two additional digital inputs configurable as freeze inputs to capture simultaneous position snapshots. It operates on a 24 V DC load voltage (L+ minus 0.8 V) and draws a typical 3 W from the backplane bus, plus up to 160 mA from the 5 V DC backplane supply. ## Cable-length budget at clock speed The SSI clock frequency is programmable up to 1 MHz, but the maximum shielded cable length drops with frequency: 320 m at 125 kHz, 160 m at 250 kHz, 60 m at 500 kHz, and 20 m at 1 MHz. For a 600 m cable run at lower data rates, the module supports that length when clocked below 125 kHz. It requires a 20-pin front connector (sold separately) and supports 2-wire sensor connections on the digital inputs.","metaTitle":"Siemens 6ES7338-4BC00-0AB0 SSI Sensor Module, End-of-Life","metaDescription":"Siemens 6ES7338-4BC00-0AB0 SIMATIC S7-300 signal module for 3 SSI sensors with 2 freeze inputs. End-of-life; sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["PLC I/O & Expansion Modules"],"specifications":{"24 V":"Yes; L+ (-0.8 V)","Depth":"120 mm","Width":"40 mm","Height":"125 mm","Functions":"Freeze","2-Wire Sensor":"Yes","For Signal \"0\"":"-3 to +5V","For Signal \"1\"":"11 to 30.2 V","Shielded, Max.":"600 m","Weight, approx.":"235 g","lifecycle_stage":"eol_hot","Diagnostic alarm":"Yes; Parameterizable","Power loss, typ.":"3 W","Rated value (DC)":"24 V","At \"0\" To \"1\", Min.":"300 µs","For Signal \"1\", Typ.":"9 mA","Output current, max.":"900 mA","Clock frequency, max.":"1 MHz","Absolute encoder (SSI)":"Yes","Number of digital inputs":"2","Required Front Connector":"20-pin","Cable length, shielded, max.":"320 m; 320 m at 125 kHz; 160 m at 250 kHz; 60 m at 500 kHz; 20 m at 1 MHz","from backplane bus 5 V DC, max.":"160 mA","permissible range, lower limit (DC)":"20.4 V","permissible range, upper limit (DC)":"28.2 V","Number of connectable encoders, max.":"3","from load voltage L+ (without load), max.":"10 mA","For Signal \"0\", Max. (Permissible Quiescent Current)":"2 mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$186.69","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=120546&mlfb=6ES7338-4BC00-0AB0","alternativesUrl":"https://aoctrl.com/api/mcp/products/6ES7338-4BC00-0AB0/alternatives.json"},"ai":{"faq":[{"question":"What is the replacement for 6ES7338-4BC00-0AB0?","answer":"Siemens has not published a direct official successor for this module. For new designs, consider migrating to the S7-1200 or S7-1500 platform with an appropriate SSI-capable I/O module; for existing S7-300 racks, verify stock availability through surplus channels."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6ES7338-4BC00-0AB0","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/siemens/6ES7338-4BC00-0AB0 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:15:54.622Z","lastPublished":"2026-09-02T08:15:54.622Z","indexable":true}}